Astronomy Observation Log

Classic Rich Field

Astronomy

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Classic Rich Field booklet (print-on-demand)

Messier Objects

Cosmology

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Messier Nebulae

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Messier Nebulae – Orion/Cygnus Arm

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Messier Nebulae – Sagittarius Arm

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Messier Open Clusters

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Messier OC : 0-10 Myr (“Kindergarten”)

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Messier OC : 10-100 Myr (“Teenagers”)

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Messier OC : 100-1000 Myr (“Boomers”)

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Messier OC : 1000-5000 Myr (“Retirees”)

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Messier OC : 5000-10000+ Myr (“Hospice”)

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Messier Dying Stars

Death of Messier High Mass Stars
(Supernovae)

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Death of Messier Low Mass Stars
(Planetary Nebulae)

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Messier Globular Clusters

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Messier GCs, XLS (MS Excel)

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Classic NGC

Observations

Classic best NGC list, PDF (Adobe)

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Classic best NGC list, XLS (Excel):

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Classic Best NGC – WINTER

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CBN Winter – PERSEUS

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CBN Winter – Auriga

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CBN Winter – Taurus

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CBN Winter – Gemini

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CBN Winter – Orion

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CBN Winter – Monoceros

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CBN Winter – Camelopardalis

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CBN Summer – Cepheus

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CBN Fall – Cepheus

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CBN Fall – Cassiopeia

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CBN Fall – Pegasus – Andromeda – Perseus

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Boyer-Moore Search

Boyer-Moore search algorithms.

Boyer-Moore algorithms for searching a text for a single substring.
These modules use a reverse (right->left), pattern scan with two predefined shift functions resulting in an average sub-linear performance:  O(text-length/pattern-length).
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MAKEFILE
BM.H
BM.C
BM.TST
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Tuned Boyer-Moore search algorithm.

Tuned Boyer-Moore (BM) algorithm for fast string searching.
These modules implement a compact, portable and fast BM algorithm, ie. an unrolled variant of search forward for rightmost char in the pattern.

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MAKEFILE
TBM.H
TBM.C
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Aho-Corasic Search

Aho-Corasic search algorithm.

Aho-Corasic algorithm for searching a text for several fixed substrings. These modules implement a simple “Finite State Automaton” (FSA) to locate all occurences of any of a number of keywords in a string of text.
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MAKEFILE
AC.H
AC.C
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Bool

Boolean expression evaluation

These modules implement a simple compiler for evaluating boolean expressions.
The compiler is structured into two parts :

1: a front end for transforming a boolean expression from infix form to postfix form (consisting of : SCANNER, PARSER, EMITTER);

2: a back end for interpreting the postfix boolean expression using an abstract/software stack machine (consisting of : INTERPRETER).

The compiler “front end” and “back end” communicate using a common symbol table (cf BOOL.H).
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MAKEFILE
BOOL.H
BOOL.C
BOOLTST.BAT
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BOOL.C includes the general header files (see blog post: General):
general.h, error.h and stack.h

General

General header files for C-program compilation

Targeting MS-DOS or UNIX OS.
Includes macros (in STACK.H) for creating stacks of simple objects.
Includes macros (in ERROR.H) for general error handling.
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GENERAL.H
STACK.H
STACK.C
STACK.TST
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MAKEFILE
ERROR.H
ERROR.C
ERROR.TST